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Finding the Fourth Proportional to 8,998.56, 13,488.60 and 4,311.72

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Solution

The fourth proportional to 8,998.56, 13,488.60 and 4,311.72 is: 6,463.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,998.56 : 13,488.60 = 4,311.72 : x
  2. Step 2: Convert to fraction form
    8,998.56/13,488.60 = 4,311.72/x
  3. Step 3: Cross multiply
    8,998.56x = 13,488.60 × 4,311.72
  4. Step 4: Simplify right side
    8,998.56x = 58,159,066.39
  5. Step 5: Solve for x
    x = 58,159,066.39/8,998.56
  6. Step 6: Final answer
    x = 6,463.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.